Electric socket



' E. F. GUTH ELECTRIC SOCKET Filed April 19. L927 Feb. 4, 1930.

Q ATTORNEYS INVENTOR EMM Patented Feb. 4, 1930 ems STATES PATENT I orrics EDWIN F. GUTH, on ST. LOUIS, MIssoUaI ELECTRIC SOCKET Application filed April 19,

j 10 My invention has for its object to provide means whereby this may be done, and also to construct the socket so that it may be utilized for supporting the lighting fixture itself.

A further object is to provide .for the adjustment of a canopy to the inequalities of the ceiling. 1

I I attain these objects by the use of a specially constructed shell for the socket, this 20 shell being formed of porcelain or other non-conducting material. Fixture-securing means are formed on the exterior. wall of this shell. This is a real, practical, advantage, because the canopy will be insulated without 2 s ecial cano insulation bein re uired, P P3 5 which is usually specified in the installations where a metal or other similar ceiling is employed. v

Another desirable advantage by the use of the hereinafter described supporting means, is that no special form is required to clamp the fixture on to the insulating shell, consequently all danger of breaking the shell (which as stated, is formed of porcelain or other insulating. material) is avoided.

My means of accomplishing these objects maybe more readily understood by having reference to the accompanying drawings, which are hereunto annexed and made a part of this specification, in which Fig. 1 isa side elevation of my improved socket; r Fig. 2 is a longitudinal sectional view, taken on line 22 ofFig. 4; v I,

Fig. 3 is a similar view, taken on line 3 -ofFig.4;

Fig. 4 is a bottom plan view of my device;

; Fig. 5 is a'topplan view of the same;

"5e 6 is an assembled View of a canopy 1927 Serial No. 184,873.

and shade, partly broken away to show the use of my improved device; and

Figs. 7 and 8 show modified views of my improved device.

Similar reference numerals refer to similar parts throughout the entire description.

As shown in the drawings, my improved socket 10comprises a cylindrical shell which may be made of porcelain, bakelite, gummon, etc., so that all of the requirements of the insurance underwriters, as to electrical insulation will be fully metis shown provided with a cap 11, preferably of metal, and

preferably secured to the socket 10 by screws 12 and 13. Obviously any other desired form of suspension meansmay be used in place of the cap. 11. The cap 11 is provided with a neck or stem 14:, which has internal threads 13 which, fit the stud of the standard outlet box, or the nipple where a hickev is employed. The usualset screw 16 is provided, to prevent its unscrewing. The usual copper cup 17 is mounted in the customary manner within the socket 11, being provided with rolled threads which fit the threads on the lamp bulb 18. The exterior of the socket 10 is provided with threads 19, upon which the fixture or what it is. desired to support (not shown) may be screwed. From the foregoing it will be apparent to those skilled in the art that strength of the socket 10 to support a fixture will depend upon the kind of insulating material used in its construction, and'the screws 12 and 13 and cap 11. It will be obvious th-atthe. fixture can be completely assembled on the bench, and then carried up to the socket 10 and secured inplace simply by giving it a few turns. Another desirable result is that a fixture can be very easily removed from the ceiling to the floor for cleaning, thus, to a great extent, saving breakage of glass.

In Fig. 7 I have shown the cap 11 on my socket 10 screwed on to a nipple 20 which depends from an outlet or junction box (not shown); thecanopy 21 is screwed on to the socket 10, covering the outlet box and wires, the adjustable feature permitting a flush ceiling finish. The reflecting shade 22 can thenbe screwed on to the socket 10, until the filament is properly positioned to give the most efiicient results.v

It may in some instances be found desirable to form the exterior of the socket 10 as shown 7 in Fig. 7, with a plurality of lugs 23, or rings 24, to support the fixture; or I may even provide a metal shell 25, with threads or lugs thereon to support *the fixture, as shown in Fig.8.

For the purpose of full disclosure of my invention I have described, in some detail, a

specific embodiment of my invention but it U will be apparent that numerous changes might be made in the physical embodiment of my invention within the scope of the claims and I do not desire, therefore, to be understood as limiting myself in the broader aspect of my invention-to the specific construction shown and described.

Having described my invention, what Iregard as new, and desire to secure by Letters Patent of the United States, is

1. An electric socket formed of insulating material, said socket being hollow, threaded on the outside for its entire length and closed at one end, a metal shell and contact supported therein by the closed end, a cap resting on said end and screws passing therethrough into the cap, said cap being threaded forconnection to a support.

2. An electric socket formed ofinsulating material, having a standard reception for an electric lamp bulb, there'being internal re cesses and apertures through its top, screws mounted in said apertures, their heads fitting in said internal recesses, a cap of metal, a neck I on said cap having threads therein, a set screw mounted in said neck. and a plurality of threads on the outer wall of said socket which extends the fulllength of said socket.

3. An electric socket formed of insulating material, having a standard reception for an electric lamp bulb, there being internal recesses and apertures through its top, screws mounted in said apertures, their heads fitting in said internal recesses, a neck on said socket having threads therein, and a plurality 01 threads on the outerrwall of said socket which extend the full lengthof said socket.

" EDWIN F. GUTH. 

